Pneumatic painting-nozzle



(No Model.)

A. FISHER. PNEUMATIG PAINTING NOZZLE.

Patented Peb. 18, 1896-.

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ABEL FISHER, OF VELLSVILLE, OHIO'.

PN EU IVIATIC- 4PAINTIN CJl-,NOZZLEl SPECIFICATION forming part of Letters Patent No. 554,921, dated February 18, 1896.

Application led April 23, 1895. Serial No. 546,813. (No model.)

To all whom t may con/cern:

- Be it known that I, ABEL FISHER, a citizen of the United States, residing in Vellsville, county of Columbiana, State of Ohio, have invented a certain new and useful Improvement in Pneumatic Painting-Nozzles, of which the following speciiication is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

Myinvention relates to the class of devices in which paint, whitewash, or like substance is thrown onto the surface to be coated by the action of compressed air; and the object of my invention is to provide a nozzle so constructed that 'while its operative parts can be of standard dimensions the effective length of the nozzle can be made greater or less, as may be desired, and without materially affecting its weight; also, to provide simple and efficient means for regulating the iiow of fluids from the nozzle, such means being controlled from the butt-end thereof; also, to provide means for cleaning the nozzle, stirring the fluids used as a paint, and, if desired, communicating pressure from the reservoir containing such fluid to assist in forcing it into the nozzle.

The nature of my improvements will be best understood as described in connection with the drawings, in which they are illustrated, and in which* Figure l is a view of my improved nozzle, showing also the reservoir of paint material from which it is supplied. Fig. 2 is a longitudinal central section through the nozzle. Fig. 3 is a similar view of the delivery end of the nozzle, showing a different adjustment of the valves therein. Fig. 4. is a cross-section of the nozzle on the line ma of Fig. 2,`and Fig. 5 is a sectional view of the delivery end of a somewhat modiiied nozzle.

A indicates the reservoir of paint, B a flexible tube extending from the bottom of this reservoir to the nozzle, and C a similar flexible tube extending from the nozzle to a reservoir of compressed air. (Not shown.)

D indicates my improved nozzle, which in its best and most perfect form is made up of three parts-namely, a butt-end D', containing the attachments by which the supply of paint and of compressed air is delivered to the nozzle and valve-actuating devices by which the flow of fluids in and from the nozzle is controlled; second, a delivery end D2, containing the valves by which the iiow of fluid is regulated, and, third, an intermediate section D3, made up of light metal tubing secured to the tubes which make up the butt and delivery ends of the nozzle. It will readily be. seen that by this method of construction I can make my nozzle as long as may be desired by simply increasing the length of the light metal tubes making up the section D3, and without in any way interfering with the standard construction of the ends of the nozzle or materially increasing its weight as a whole.

Essentially the nozzle consists of two concentric tubes, through one of which passes the paint,- while the air is delivered to the other, and for the purpose of conveniently attaching the intermediate section D3 to the butt and delivery sections I make the inner tube of the butt-sections extend farther forward than the outer tube and the inner tube of the delivery end extend farther backward than the outer tube, though this is not at all essential to the proper putting together of the device.

The butt-end section Dl of the nozzle in the construction shown is made up of a T-section E, through the lateral opening of which the ilexble connection with the paint-reservoir is made, and to the front openin g of which is attached the inner pipe-section E', while to the rear opening is attached a plug E6 having in it a perforation e6 through which passes a valve-rod F2, said rod also passing through an end piece F, which is screwed onto the plug E6 and is provided at its outer end with a thread on which screws a handle F attached to the valve-rod F2. In front of the T-section E, I secure a handle F6 to the inner tube E', this handle screwing into an extension F'T of a perforated plug GG, which fits on the inner tube E and into the rear end of a tubular T- section G, through the lateral opening of which connection is made with the compressed-air reservoir. It will readily be seen that by turning the handle F6, the plug GrG an d tube-section G being held stationary, the inner tube E will be caused to advance or re- IOO cede longitudinally with respect to the said outer tube.

Referring now to the delivery end of the nozzle, G2 is the outer tube, corres pondin g with the section G of the butt-end, and E3 is the inner tube, corresponding with the section lil of the butt.

e e3 indicate spiders by which the tubes are maintained in concentric position while free to move longitudinally, and similar spiders f2 are provided to guide the valvespindle l2 through the inner tube E3. The ilowof iiuid from the outer tube is, in the construction shown, regulated by means of the flared end E* of the tube E3, in connection with the extreme end y of the outer tube G2. It will readily be seen that the relative longitudinal motion of the tubes G2 and E3 can be made to close the opening in the tube G2 or to regulate it at will.

F3 indicates the valve secured on the outer end of the rod F2. As shown in Figs. 2 and 3, it is really made up of two valves F'L and F5, while in Fig. 5 only the one valve, F4, is shown. lll each case, however, the extreme outer end of the part F3, on which the valves are formed, and which is indicated at FG, extends into the mouth of the end piece of the nozzle, so as to insure the proper spreading of the paint. The valve portion F4 operates, in connection with a preferably conc-shaped terminal, as E5, to the pipe-section lil, to regulate the liow of il uid through its inner tube.

The end piece G3 is attached to the outer tube-section G2 and is preferably made with a portion of its length conical, as indicated at G", Figs. 2 and 3, its extreme outer end being preferably cylindrical, as indicated at lt is in connection with the conical portion G'l of the end piece that the valve F5 operates, and it will be readily seen that by moving the valve-rod F2, l regulate not only the opening from the inner tube but the opening in the en d piece G3 through which the mixed air and paint mixture must pass. lt is also evident that by moving the valve F5 forward it can be brought into contact with the conical portion G" of the end piece, en tirely closing the delivery end of the nozzle, as indicated in Fig. b.

G and E2 indicate respectively the light metal pipe-sections connectin the inner and outer tubes of the butt and delivery ends oi' the nozzle.

lt will be readily seen that in the construetion l have described the iowof paintmixturc and compressed airis entirelywithin the control of the operator holding the butt-end of the nozzle, irrespective of the length to which the nozzle may be extended. lt will also be understood that in operation the paint is delivered from the end piece of the nozzle in the form of a ne spray and with considerable force. XVhen it is desired to clean thenozzle, or to effect a more thorough mixture of the paint in the reservoir, the valve F5 is moved forward to the position shown in Fig. 3, in which case the compressed air, being unable to escape from the nozzle at the end, will pass into the interior or paint tube of the nozzle, forcing the paint out of that and out of the ilexihle tube back into the receptacle A. ln this way the nozzle and its connections can be cleaned at any time, and, by permitting the air to continue its ilow into the tank A, the paint mixture contained therein can be thoroughly mixed. Also if the paint-receptacle is an air-tight tank the compressed air will accumulate there and assist in, forcing the paint out of the tank and into the nozzle when the apparatus is again brought to an operative condition. In the construction shown in Fig. 5 this adapta-bility for cleanin the nozzle by means of the air and for stirring the tank is of course lost, but for many purposes such a nozzle will be found eiieient and useful.

llaving now described my invention, what I claim as new, and desire te secure by Letters Patent, is

l. ln a painting-nozzle the combination of two concentric tubes relatively movable in a longitudinal direction, eoacting valve parts as E" g2 for regulating the ilow of fluid through the outer tube situated near the delivery end ol' the nozzle and actuated by the relative movement oi the tubes, means as handle F for moving one tube on the other, a valve as F*1 arranged at the deliveryend ol the nozzle to control the ilow of iluid from the inner tube, a valverod F2 secured to said valve and running through the inner tube, means as handle F situated in the butt-end of the nozzle for actuating said rod and valve, and means, as T-seetions E and G for delivering air and paint to the tubes at the buttend ol' the nozzle.

2. ln a paintingnozzle the combination. with concentric tubes having means for connecting them to reservoirs of air and paint at their b utt-ends oi' a contracted delivery end G secured on the exterior tube a-nd extending beyond the delivery end ol the inner tube, a valve Fs adapted to close and regulate the opening in the delivery end GIl and in the delivery end of the inner tube, and means for actuating said valve from the buttend of the In a painting nozzle the combination with concentric tubes having means for conneetin g them to reservoirs of air and paint at their butt-ends and means for moving them longitudinally with relation to each other, of a contracted delivery end Gl secured on the exterior tube and extending beyond the delivery end of the inner tube, a valve F5 lying in the contracted delivery end Gl and in front of the delivery end of the inner tube and adapted to regulate and close the opening in the delivery end G4, means for actuating said valve from the butt-end of the nozzle, coactin g valve-surfaces actuated by the rela-tive IOO IIO

movement of the tubes for regulating the iioW of fluid through the outer tube and means for moving the tubes relatively to each other and thus actuating said valve said means being situated at the butt-end of the nozzle.

4. In a painting-nozzle the combination with concentric tubes having means for connecting them to reservoirs of air and paint at their butt-ends and means for moving them longitudinally With relation to each other, of a contracted delivery end G4 secured on the exterior tube and extending beyond the delivery end of the inner tube, a valve F3 adapted to close and regulate the opening in the delivery end Gr4 and in the delivery end of the inner tube, means for actuating said valve from the butt-end of the nozzle,coacting valvesurfaces actuated by the relative movement of the tubes for regulating the flow ofl fluid through the outer tube and means for actuating said valve situated at the butt-end of the nozzle.

. In a painting-nozzle the combination with concentric tubes having means for connecting them to reservoirs of air and paint at their butt-ends, and means for moving them longitudinally with reference toeach other situated near the butt-end of the nozzle of coacting valve-surfaces situated near the delivery ends of the tubes and actuated by their relative movement to control the flow of fluid through the outer tube, a valve arranged at the delivery end of the inner tube to control the iioW of luid through it, and means situated at the butt-end of the nozzle for actuating said valve.

ABEL FISHER. Witnesses:

JNO. W. RILEY, CHAs. BOYD. 

